State Joule's law of heating. When a 12 V battery is connected
across an unknown resistor, there is a current of 2-5 mA in the
circuit. Find the value of the resistance of the resistor. 1+2-3
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Answer:
heat produced in a conductor is directly proportional to the square of current, resistance and time and R=48000ohm
Explanation:
R=V/I
R=12/2.5×10-4
R=120000/25=48000ohm
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